Enhanced Attachment (Opsonization) of a
Bacterium By Way Of the Antibody IgG

The Fab portion of IgG binds
to epitopes of a microbe. The Fc portion can now attach the microbe to Fc
receptors on phagocytes for enhanced attachment, also known as opsonization. Once
attached to the phagocyte by way of IgG, the microbe can
be engulfed more efficiently and placed in a phagosome, and destroyed by lysosomes.